Site Reliability Engineer I

Mastercard•O'fallon, MO
•$61,000 - $102,000

About The Position

The Service Operations Technology (SOT) BizOps team is seeking a Site Reliability Engineer to support and enhance enterprise infrastructure, asset management, automation, and operational platforms. The role focuses on reliability, observability, automation, release management, and operational excellence across business-critical services. Business Operations partners with engineering teams to improve operational readiness, automate processes, and ensure platforms meet high standards of availability, performance, security, and scalability. The Site Reliability Engineer supports the full service lifecycle and ensures operational requirements—including availability, resiliency, performance, observability, security, capacity management, and deployment automation—are incorporated throughout the software lifecycle. The role bridges engineering and operations by supporting production services, managing operational risk, participating in releases, driving automation, and improving platform reliability through proactive engineering and continuous improvement. Depending on platform focus, the engineer may also work on deployment automation, infrastructure management, CI/CD pipelines, integrations, and modernization opportunities.

Requirements

  • Experience administering enterprise platforms in production environments, including upgrades, patching, troubleshooting, performance tuning, and operational support.
  • Experience with CMDB, discovery, asset management, inventory management, or related enterprise technologies.
  • Strong Linux/Unix administration skills.
  • Working knowledge of Windows administration and authentication technologies, including Active Directory, LDAP, SSH, and service accounts.
  • Experience supporting software releases, production changes, and operational readiness activities.
  • Strong scripting and automation skills using Python, PowerShell, Bash, or similar technologies.
  • Experience with APIs, integrations, workflow automation, and orchestration technologies.
  • Understanding of monitoring, observability, alerting, and operational health management.
  • Experience troubleshooting distributed systems across infrastructure, application, network, and integration layers.
  • Strong analytical, problem-solving, and root cause analysis skills.
  • Ability to manage operational responsibilities while driving strategic automation and platform improvements.
  • Strong communication and stakeholder management skills.
  • Ability to effectively manage and resolve high-severity production incidents.
  • Bachelor's degree in Computer Science, Engineering, Mathematics, or a related field, or equivalent experience.
  • Experience with software engineering principles, automation, scripting, pipeline management, and system design.
  • Strong sense of ownership, urgency, and systematic problem-solving.
  • Experience debugging, optimizing, and automating complex technical environments.
  • Ability to manage competing priorities and work effectively with multiple stakeholders.
  • Experience in one or more programming languages such as Python, Java, Go, C++, Ruby, or similar.
  • Knowledge of Site Reliability Engineering principles, DevOps practices, observability, automation-first operations, and continuous improvement.
  • Experience working across development, operations, product, and infrastructure teams.

Nice To Haves

  • Familiarity with source control systems, CI/CD platforms, artifact repositories, and infrastructure automation technologies.
  • Demonstrated passion for innovation, automation, operational excellence, and continuous learning.

Responsibilities

  • Support the full service lifecycle from design and implementation through deployment, operation, and optimization.
  • Serve as an operational owner for critical enterprise platforms, ensuring reliability, availability, performance, and scalability.
  • Support production readiness reviews, launch assessments, capacity planning, and operational validation.
  • Monitor, maintain, and troubleshoot services in production environments.
  • Lead incident response, root cause analysis, and implementation of long-term corrective actions.
  • Drive automation initiatives that reduce operational toil and improve platform stability.
  • Support releases and deployments while ensuring production readiness and operational excellence.
  • Perform operating system maintenance, patching, vulnerability remediation, and lifecycle management.
  • Analyze operational data and ITSM activities to identify resiliency improvements and operational risks.
  • Collaborate with globally distributed teams across multiple regions and time zones.
  • Maintain operational documentation and contribute to knowledge sharing and mentoring efforts.
  • Design and maintain deployment automation and infrastructure management solutions, where relevant to platform engineering and automation work.
  • Support CI/CD pipelines and modern DevOps practices, where relevant to platform engineering and automation work.
  • Develop tools, integrations, and automation that improve reliability, efficiency, and scalability.
  • Enhance platform visibility, operational effectiveness, and customer experience.
  • Evaluate emerging technologies and identify modernization opportunities.
  • Partner with engineering teams to improve deployment reliability and reduce operational risk.

Benefits

  • Medical, prescription drug, dental, vision, disability, and life insurance.
  • Flexible spending account and health savings account.
  • Paid leaves, including 16 weeks of new parent leave and up to 20 days of bereavement leave.
  • 80 hours of Paid Sick and Safe Time.
  • 25 days of vacation time and 5 personal days, prorated based on date of hire.
  • 10 annual paid U.S. observed holidays.
  • 401(k) with a company match.
  • Deferred compensation for eligible roles.
  • Fitness reimbursement or on-site fitness facilities.
  • Eligibility for tuition reimbursement.
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